Dyna FS Ignition

[Schizo]

How many of you guys running Dyna FS have rejetted bigger and how many sizes bigger did you go? Thanks.

[baddboyy21]

I have the Dyna Ignition. When I put it on I was using stock carbs, I jetted up one main jet I think. I have since rebuilt the entire engine to a 12 port stroker. I am currently running 178 main jets in the 34pj's. Im still in the process of fine tuning it.

[Ducman]

If you go from stock timing to advanced ignition, which the dyna does, go up one main size, possibly 2 since it also gives a more powerful spark.

[sredish]

If you go from stock timing to advanced ignition, which the dyna does, go up one main size, possibly 2 since it also gives a more powerful spark.

357198[/snapback]

[Schizo]

So you go up 1 maybe 2 on the mains and will the stock coil and plug wires still be efficient or should you swap those out also?

[Basicorpse]

So you go up 1 maybe 2 on the mains and will the stock coil and plug wires still be efficient or should you swap those out also?

357493[/snapback]

 

The dyna fs ignition is designed to be used with all stock coils and plug wires. At least thats what the instruction manual for it states.

[race-a-holic]

The dyna fs ignition is designed to be used with all stock coils and plug wires.  At least thats what the instruction manual for it states.

357505[/snapback]

Use a b8es(stock).I believe all the settings have more spark,just different timing curves.Dyna told me to go up 3 jet sizes.

[Rare Scottish Tree Badger]

Use a b8es(stock).I believe all the settings have more spark,just different timing curves.Dyna told me to go up 3 jet sizes.

360405[/snapback]

They may have told you to go up 3 sizes in your jetting, but did they really say to use a B8ES Plug. It needs to be the resistor type plug. ... BR8ES

 

Quotes from Dynatek's fitting instructions:

 

"The DynaFS ignition was designed to work best with stock coils, coil wires, plug caps, and spark plugs. The increase in spark energy from using the DynaFS ignition is enough so that adding any of these will not improve performance, and can cause problems. Use resistor type spark plugs ONLY. Use the stock resistor style spark plug cap."

 

I suppose there is a contradiction in there where they say to use "stock ... spark plugs" and then go on to say "Use resistor type spark plugs ONLY". I guess they assume that the stock plugs are resistor type.

 

Jetting:

 

"Use of this ignition may require rejetting of the carburetor to supply more fuel to maximize performance gains. ... Curve 4, the stock curve, is least likely to require any sort of jetting adjustment. Using the other curves may result in a lean misfire condition at high RPMs when the jetting is not properly set."

 

Rare.

[race-a-holic]

They may have told you to go up 3 sizes in your jetting, but did they really say to use a B8ES Plug. It needs to be the resistor type plug. ... BR8ES

 

Quotes from Dynatek's fitting instructions:

 

"The DynaFS ignition was designed to work best with stock coils, coil wires, plug caps, and spark plugs. The increase in spark energy from using the DynaFS ignition is enough so that adding any of these will not improve performance, and can cause problems. Use resistor type spark plugs ONLY. Use the stock resistor style spark plug cap."

 

I suppose there is a contradiction in there where they say to use "stock ... spark plugs" and then go on to say "Use resistor type spark plugs ONLY". I guess they assume that the stock plugs are resistor type.

 

Jetting:

 

"Use of this ignition may require rejetting of the carburetor to supply more fuel to maximize performance gains. ... Curve 4, the stock curve, is least likely to require any sort of jetting adjustment. Using the other curves may result in a lean misfire condition at high RPMs when the jetting is not properly set."

 

Rare.

360435[/snapback]

I guess you're right.The bike run good with the plugs I was using,but might have run better with resistors.Since switching to alcohol,I'm now using a br9es.